isnrrd
Syntax
Description
Examples
Check If File Is Valid NRRD File
Check whether a file is a valid NRRD format file. The file is part of a data set containing the 3-D CT and MRI scans from The Retrospective Image Registration Evaluation (RIRE) Dataset, converted to the NRRD file format. The original data set was provided by Dr. Michael Fitzpatrick. For more information, see the RIRE Project homepage. The size of the entire data set is approximately 35 MB. Download the data set from the MathWorks® website, then unzip the folder.
zipFile = matlab.internal.examples.downloadSupportFile("medical", ... "MedicalRegistrationNRRDdata.zip"); filepath = fileparts(zipFile); unzip(zipFile,filepath)
Specify the name of the NRRD file to check.
filename = fullfile(filepath,"supportfilesNRRD","Patient007CT.nrrd");
Check if filename
is a valid NRRD file. The isnrrd
function determines that the file is valid.
isnrrd(filename)
ans = logical
1
Input Arguments
filename
— Name of NRRD file
string scalar | character vector
Name of the NRRD file, specified as a string scalar or a character vector. The file
must contain a valid NRRD file header. filename
can contain the
absolute path to the file, a relative path from the current directory, or a relative
path from a directory on the MATLAB® path.
Data Types: char
| string
Output Arguments
tf
— File is valid NRRD file
true
or 1
| false
or 0
File is a valid NRRD file, returned as a logical 1
(true
) or 0
(false
). The
output value is 1
if filename
contains a valid
NRRD header. The function can determine the validity of NRRD files that contain image
data or are detached header files.
Version History
Introduced in R2022b
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